Shock absorber



' Feb. 1, 1927.

J. E. ARZENS SHOCKYABSYORBER Filed June 15, 1925 Patented Feb. 1, 1927. i

UNITED STATES I JOSEPH EMILE ARZENS, OF PARIS, FRANCE.

SHOCK ABSORBER.

Application filed June 15, 1925. Serial No. 37,395, and. in France September 9, 1924.

The object of this invention is to provide a spring-handlebar for cycles of which the construction will be extremely simple in that it comprises very few separate parts, and to which parts access can be had easily and expeditiously; the construction being very simple, thereby materially lessening the cost of manufacture.

This invention relates. more particularly in to spring handle-bars of the type in which a part of the handle-bar having therein a split and therefore resilient collar, is contained within an encasement consisting of separate parts attachable to the stem; a proj ecting lug, forming part of the collar, being held resiliently between two spiral springs of which one is situated above and the other below that part of the lug which projects into the stem which, as usual, is adjustably fitted within the cycle-head; the arrangement being such that when the handle-bars are depressed or raised the spring on one or the other side of the lug will be compressed. In such device adjustment of the height of the handles is effected by loosening a bolt which draws together two additional lugs each proj ecting from one side of the slit in the collar. According to this invention, simplicity of construction is attained by the integral formation of one half of the encasement with the adjustable stem of the cycle; the other and only constituent part thereof being in the form of a lid which is bolted thereto in such manner as to enable expeditious access to be had to the parts within the encasement.

Further simplicity of construction is attained by dispensing with additional lugs for the bolt in the collar and forming the collar of a length of material having projecting end-portions which lie one above the other and almost contiguously; said end portions having one or two clamping bolts passed through them and constituting the lug which extends between the springs.

Firm retention of the handle-bar within the collar is effected by pins which project from the handle-bar and respectively enter any one of two respective annularly disposed series of perforations in the collar.

For more precise description reference is to be had to the accompanying drawing in which Figure 1, is a view, in perspective, of a spring-handle-bar constructed in accordance 55 with my invention; Fig. 2 is a view, taken transversely of the handle-bar and in section; Fig. 3 is a plan of the lower part of the encasement, in section.

The encasement 1 comprises alower part 2 which is integrally formed with the upper part of the stem 4 which, as is usual, fits into the head of the bicycle frame. The part 2 comprises a socket 12 and an off-set troughshaped portion 14. A counter-part or lid 15. having approximately the same interior shape as the part 2, is secured to the part 2 by bolts 9 and-nuts 3; the side walls 17 of both parts 2 and 15 having semi circular recesses 18 constituting openings for the passage therethrough of the handle-bar. portion of the handle-bar which is within the casinghas an enlargement 7 to prevent longitudinal movement of the handle-bar through the openings 18. This enlargement is preferably roughened on its outer surface to afford a surface upon which a collar 5 will grip firmly when clamped about it.

As further security, locking of the handlebar, to prevent any possibility of movement thereof within the collar 5, is effected by pins 10 which project from the surface of the handle-bar and respectively enter any one of two annularly disposed series of perforations 19; the adjustment of the pins into different perforations being effected by loosening the bolts' 8, which permits the collar to spring open so that the perforations 19 are clear of the pins 10, raisingthe handles to the required height, and then tightening the bolts 8 to cause the pins to enter the required perforations. Access to the bolts 8, can be easily had by removing the nuts 3 and cover 15. length of flattened bar of which the end portions project beyond the collar and, lying one above the other, constitute a lug 6 of which the upper and lower faces have recesses 18; the two parts of the lug being provided with bolts 8, which bind the collar about the enlargement 7 of the handle-bar.

Two spiral springs 11, each have one end within one of the sockets 12, and the other end retained in place upon the lug 6 by the recesses 13.

What I claim is 1. In a shock absorber for the handlebars of cycles comprising a stem fitted adjustably into the head of a cycle, said stem having at the upper end thereof, an encasement of which one part is formed integrally with the stem and the other part thereof is attachable thereto by securing bolts.

That

The collar 5 is formed of a suitable 2. Ina shock absorber for the handle-bars of cycles comprising a stem fitted adj ustably into the head of a cycle, said stem having at the upper end thereof, an encasement of which one part is formed integrally with the stem and the other part thereof is attachable thereto by securing bolts, and a spring retaining socket formed in each of the two parts. V j e 1 I,

3. In a shock absorber for the handle-bars of cycles comprisinga stein fitted adjustably intothe head of a cycle, said stem having at the upper end thereof, an encasement of which one part is formed integrally with the stem and the other part thereof is at tachable thereto by securing bolts, a spring retaining socket formed in. each of the two parts, a spring collar having a lug projecting fro nits circumferential surface, encoin passing a handle-bar which is journalled in the side walls of said casing, said collar and lug formed of a single piece of bar metal folded upon itself 'so that its end portions constitute the lug, a spring retaining recess formed on each of two opposite surfaces of said lug, and bolts passed through said lug.

4. In a shock absorber'for the handle-bars of cycles comprising a stem'fitted adj ustably into the head of a cycle, said stem having at the upperend thereof an encasement of which one part is formed integrally with the stem and the other part thereof isattachable thereto by securing bolts, a spring retaining socket formed in each of thetwopaifit-s, a spring collar having a lug projecting from its circumferential surface, encompassing a handle-barwhich is journalled in the-side Walls of said casing, said collar,- and lug formed of a single piece of bar metal folded upon itself so that its end portions constitute the lug, a spring retaining recessf'ormed on each of two opposite surfaces of said lug, bolts passed through said lug and spiral springs interposed between the lug and the encasement and having their respective ends within the sockets therein and in the lug.

5. In a shock absorber for the handlebars of cyclescom'prising a stem fitted adjust-ably into thehead of a cycle, said stein having, at the upper end thereof, an encasement of which one part is formed integrally with the stem and the other part thereof is attachable thereto by securing bolts, a spring retaining socket formed in each ofthe two parts, a spring-collar encompassing a handle-bar journalled in the encasement and having a lug formed integrallytherewith and projecting from its circumferential surface, said spring-collar having annularly disposed perforations, and pins pro-jectin outwardly from the surface of that part OI the handle-barwhich iswithin the collar. v

6. In a shock-absorber for handle-bars of cycles comprising a stem fitted adjustably into the head of a cycle,said stem having, at the upper end thereof an encasement of which one part is forinedintegrally with the stern and the other part thereof is attachable thereto by securing bolts, aspring retaining socket formed in eachof the two parts, a spring-collar encompassing a handle-bar journalled in the encasement and having a lug formed integrally therewith and projecting from itscircumferential surface said spring collar having annularly disposed perforations, pins projecting outwardly from the surface of that part of the handle-bar which is within the collar andspiral springs interposed between the lug and the encasement'and having their respective ends within the sockets therein and in the lug.

JOSEPH EMILE ARZENS.

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